From 71d0f8083b6cf3bee4c11e1e646b876539f9fc3d Mon Sep 17 00:00:00 2001
From: morioka <morioka>
Date: Thu, 24 Dec 1998 12:33:34 +0000
Subject: [PATCH] (charsets-to-mime-charset): Return nil if suitable
 mime-charset is not found; abolish optional argument
 `default'.

---
 mcharset.el |   40 +++++++++++++++++++---------------------
 1 file changed, 19 insertions(+), 21 deletions(-)

diff --git a/mcharset.el b/mcharset.el
index 15de1a6..3b02f6c 100644
--- a/mcharset.el
+++ b/mcharset.el
@@ -47,29 +47,27 @@
        ))
 
 
-(defun charsets-to-mime-charset (charsets &optional default)
+(defun charsets-to-mime-charset (charsets)
   "Return MIME charset from list of charset CHARSETS.
-This function refers variable `charsets-mime-charset-alist'
-and `default-mime-charset'."
+Return nil if suitable mime-charset is not found."
   (if charsets
-      (or (catch 'tag
-	    (let ((rest charsets-mime-charset-alist)
-		  cell)
-	      (while (setq cell (car rest))
-		(if (catch 'not-subset
-		      (let ((set1 charsets)
-			    (set2 (car cell))
-			    obj)
-			(while set1
-			  (setq obj (car set1))
-			  (or (memq obj set2)
-			      (throw 'not-subset nil))
-			  (setq set1 (cdr set1)))
-			t))
-		    (throw 'tag (cdr cell)))
-		(setq rest (cdr rest)))))
-	  default
-	  default-mime-charset)))
+      (catch 'tag
+	(let ((rest charsets-mime-charset-alist)
+	      cell)
+	  (while (setq cell (car rest))
+	    (if (catch 'not-subset
+		  (let ((set1 charsets)
+			(set2 (car cell))
+			obj)
+		    (while set1
+		      (setq obj (car set1))
+		      (or (memq obj set2)
+			  (throw 'not-subset nil))
+		      (setq set1 (cdr set1)))
+		    t))
+		(throw 'tag (cdr cell)))
+	    (setq rest (cdr rest)))
+	  ))))
 
 
 ;;; @ end
-- 
1.7.10.4